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    Surveillance Using Particulate Tracers
    93.
    发明公开
    Surveillance Using Particulate Tracers 审中-公开

    公开(公告)号：US20230184097A1

    公开(公告)日：2023-06-15

    申请号：US18079052

    申请日：2022-12-12

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Lokendra JAIN

    IPC: E21B47/11 ,  G01N33/28

    CPC classification number: E21B47/11 ,  G01N33/2823

    Abstract: In accordance with some embodiments, a method of determining a flow profile for a wellbore using unique particulate tracers is disclosed. The unique particulate tracers are pumped only in a fraction of each stage such that a substantial portion of the unique particulate tracers are placed in a near wellbore region of the subterranean formation proximate to the wellbore.

    CARBON DIOXIDE SEQUESTERED PROPPANTS FOR WELL STIMULATION
    95.
    发明公开
    CARBON DIOXIDE SEQUESTERED PROPPANTS FOR WELL STIMULATION 审中-公开

    公开(公告)号：US20230183561A1

    公开(公告)日：2023-06-15

    申请号：US18065345

    申请日：2022-12-13

    Applicant: Chevron U.S.A. Inc.

    Inventor： Caleb Kimbrell Carroll ,  Seung Jin Han ,  Said Rachid Daher

    IPC: C09K8/80

    CPC classification number: C09K8/805

    Abstract: A method of making a hydraulic fracturing slurry can include contacting an aqueous solution comprising calcium ions with a carbon dioxide source producing a carbonated aqueous solution. Substrate particles can be submerged in the carbonated aqueous solution to produce a calcium carbonate coated proppant wherein the carbon dioxide is sequestered in the calcium carbonate. The calcium coated proppant can be combined with hydraulic fracturing fluid to produce a hydraulic fracturing slurry. Alternatively, the calcium carbonate coated proppant can be combined with silica sand to produce a proppant composition used in a hydraulic fracturing slurry.

    SYSTEM AND METHOD FOR GENERATING A SEISMIC ATTENUATION MODEL
    98.
    发明申请
    SYSTEM AND METHOD FOR GENERATING A SEISMIC ATTENUATION MODEL 有权

    公开(公告)号：US20230137100A1

    公开(公告)日：2023-05-04

    申请号：US17515105

    申请日：2021-10-29

    Applicant: Chevron U.S.A. Inc.

    Inventor： Yonghe J. Sun ,  Chunling Wu ,  Mark Chengliang Fan

    IPC: G01V1/28 ,  G01V1/30 ,  G01V1/34

    Abstract: A method is described for seismic imaging improved by an estimation of attenuation including receiving a pre-migration seismic dataset D(s, r; t) representative of a subsurface volume of interest wherein s indicates source location, r indicates receiver location, and t is the recorded travel time; calculating a pre-migration attenuated travel time t*(s, r; t); computing a time derivative of the pre-migration attenuated travel time wherein 1/Q(s, r; t)=∂t*(s, r; t)/∂t; performing a first migration on D(s,r;t) to generate common image point (CIP) gathers G(x, h) wherein x is subsurface image point and h is angle or offset; performing a second migration on D(s, r; t)*1/Q(s, r; t) to generate weighted common image point (CIP) gathers G1/Q(x, h); and calculating a conditioned ratio of the weighted CIP gathers G1/Q(x, h) over the CIP gathers G(x, h) to get CIP gathers of 1/Q(x, h) is disclosed.

    ASSESSING AND REDUCING DEPOSITION OF SCALES AND OTHER SOLIDS
    99.
    发明申请
    ASSESSING AND REDUCING DEPOSITION OF SCALES AND OTHER SOLIDS 有权

    公开(公告)号：US20230135692A1

    公开(公告)日：2023-05-04

    申请号：US17976171

    申请日：2022-10-28

    Applicant: Chevron U.S.A. Inc.

    Inventor： Wei Wang ,  Wei Wei ,  Chao Yan ,  Gregory A. Winslow ,  Xinghui Liu ,  Oya Aysen Karazincir

    IPC: G01N15/06

    Abstract: A method for evaluating a fluid to reduce a deposition of a solid within a fractured subterranean formation may include obtaining information about materials inside of a testing vessel, where the materials are designed to be representative of the fractured subterranean formation. The method may also include providing a fluid that flows through the materials inside the testing vessel for a period of time, where the testing vessel is subjected to conditions designed to be representative of downhole conditions of the fractured subterranean formation. The method may also include evaluating the material to characterize the deposition of the solid on at least some of the materials after the period of time.

    Feed flexible hydrocracking operations
    100.
    发明授权
    Feed flexible hydrocracking operations 有权

    公开(公告)号：US11639475B2

    公开(公告)日：2023-05-02

    申请号：US17385782

    申请日：2021-07-26

    Applicant: Chevron U.S.A. Inc.

    Inventor： Varut Komalarajun ,  Theodorus Ludovicus Michael Maesen

    IPC: C10G67/02 ,  B01J23/888 ,  B01D3/14

    Abstract: A hydrocracking process for converting a petroleum feed to lower boiling products. The process comprises hydrotreating a petroleum feed in a pre-treating zone in the presence of hydrogen to produce a hydrotreated effluent stream comprising a liquid product. At least a portion of the hydrotreated effluent stream is then passed to an MMS catalyst zone, and then to a hydrocracking zone. In one embodiment, the MMS catalyst zone comprises a self-supported multi-metallic catalyst prepared from a precursor in the oxide or hydroxide form. The percentage work of the hydrotreating in the pre-treating zone is maintained at a level of at least 56%.

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